Oatmeal Raspberry Bar Cookies

Seven ingredients and one pan. These oatmeal bars layer a buttery, brown sugar oat mixture on the bottom, spread seedless raspberry jam across the middle, then crumble the remaining oat mixture on top. Baked until golden, the result is a cookie bar with a crispy crumble top, jammy center, and chewy base.

The same dough does triple duty as crust, filling frame, and topping. Pressing two cups firmly into the pan creates a solid foundation that won’t crumble when you cut the bars. The rest gets scattered loosely on top, and those irregular crumbles bake into crunchy, golden bits that contrast the soft jam beneath.

Leave a quarter-inch border around the edges when spreading the jam. This prevents it from bubbling over the sides during baking and burning onto the pan. The jam thickens as it heats, turning from spreadable to almost candy-like where it touches the hot oat crust.

Cool these completely before cutting. Warm jam is liquid and will ooze everywhere if you slice too soon. Patience gives you clean, bakery-worthy bars.

Kitchen Tips

• Use room temperature butter so it blends smoothly with the brown sugar and oats. Cold butter creates a crumbly, uneven mixture.
• Press the bottom layer firmly and evenly. Loose spots bake unevenly and break apart when you try to cut bars.
• Seedless jam is a must. Seeded jam has a gritty texture that doesn’t work well in thin layers between oat crusts.

Variations

• Strawberry swap: Use seedless strawberry jam for a different fruit flavor with the same technique.
• Coconut crumble: Add shredded coconut to the oat mixture for a tropical twist.
• Chocolate drizzle: Drizzle melted dark chocolate over the cooled bars for an extra indulgent finish.